MammothPDF
Tools

Edit PDF

Click a line and retype it - a misspelled name, a wrong date - in the document's own font wherever it can be. Or put text, pictures, boxes, highlights, a signature and comments anywhere on the page. All on your own device.

Drop PDF files here

Drag them straight from your desktop

or
  • PDF files only
  • Up to 15 MB each
  • 2 files a run - unlimited with Pro

Frequently asked questions

What can I add to a PDF here?

Text in three fonts, images, boxes, ellipses, highlighter strips, freehand strokes, symbols and sticky-note comments - placed by clicking on the page, then dragged and resized.

Can I correct text that is already in the PDF?

Yes - the "Edit text" tool lets you click a line and retype it, using the document's own font wherever that font can spell the new text.

Is the document uploaded?

Nothing is uploaded: the file is opened and processed inside your browser and never leaves your device. Close the tab and it is gone.

Will my additions show in other PDF readers?

Yes. Text, shapes and images are drawn into the page itself, and comments become real PDF annotations that Acrobat, Chrome and Edge list and let others reply to.

Missing something, or did the result surprise you?